You can buy them in any diy store and they re very easy to install.
How to fill in garage door gap.
Use your scissors and cut this size.
Garage door strut reinforcement.
Take your measure between the garage door and wall.
After shimming the jamb you still have a gap that can allow air to flow and covering this gap with casing doesn t always provide enough insulation.
Install a garage door threshold.
They come with a rubber threshold and glue and sometimes a caulking gun too.
Gaps along the sides and top of the door.
Lay down a strip of vinyl weather stripping and transfer the measured length on it.
3 place the vinyl strip on the wall side where the wall meets the garage door.
Https amzn to 2yolagt universal rubber garage door bottom.
Garage door stops strips of trim running along both sides and the top of the door opening cover the gaps between the door s edges and jambs and provide a weather seal by means of a flexible flap or flange that overlaps onto the door when it s closed.
2 measure the garage door height.
Shut the garage door and go outside to seal up all the gaps.